%%
%% The LaTeX Companion, 3ed
%%
%% Example 11-3-10 on page II-159 in "Commutative diagrams with standard \LaTeX {}".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See
https://www.latex-project.org/lppl.txt for details.
%%
\documentclass{tlc3examargin}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{147.0pt}
%StartShownPreambleCommands
%StopShownPreambleCommands
\begin{document}
\[\begin{array}{ccc}
S^{\mathcal{W}_\Lambda}\otimes T &
\stackrel{j}{\longrightarrow} & T \\
\Big\downarrow & &
\Big\downarrow\vcenter{%
\rlap{$\scriptstyle{\mathrm{End}}\,P$}} \\
(S\otimes T)/I & = & (Z\otimes T)/J
\end{array}\]
\end{document}
